Same for me... beyond ND32 usually gets me into timelapsing and changing other parameters or special circumstances. Creative options are large and the package is small.Thank you for that Tom. While waiting for forum replies I Googled and found a nice video on this. Apparently the first filter is for videos and the 2nd one is for photography? In comments below that video one writer mentions that he rartrely used the 2nd filter since the first one went all the way up to 32?
Either filter will work for pics or vids.... some will argue whether they are needed for pics.
Took me a few flights experimenting to get the hang of it.